x RELIC x
Headphoneus Supremus
I could be way off, but I have a feeling you can use FiiO tool for that? Both N5 and the latest FiiO DAPs use the same processor, and there are striking similarities in overall GUI and setup menu options. Makes me wonder if GUI/controls are based on some common set of development tools licensed from the same company.
Yes, the FiiO tool works to extract and repack the firmware to be able to edit the images and coordinates and text displayed.